Gear-casing.



C. 1. LUTHER.

GEAR CASNG. APPLmATIoN FILED MAYzI. |914.

Patented May 9, 1916.

Imi/Mnmo AUNITED sTATEs PATENT OFFICE.

CLAIR-ENCE J. LUTHER, F MILWAUKEE, WISCONSIN.

Y GEARv-CASING.

. Milwaukee, county of Milwaukee, and State of Wisconsin, have vinvented new and use ful Im rovements in Gear-Casings, of which theifol owing is a specification.

My invention relates to improvements in gear casings with particular reference to that type of4 casings which are employed Vfor manila ly driven mechanisms for operating grinding wheels, buing wheels, etc.

The object of my invention is to provide inexpensive means for securing efficient lubrication of the working arts.

In small and cheaply ma e machines, such as pertain to the described class, the bearings are frequently allowed to become dry, no ellicient lubricatin means being em'- ployed for the reason t at ordinary storage lubricators would be. expensive to a degree that would practically prohibit sales, by raising the price of the articleconsiderably above that of similar articles made by others.v

By my improvement, however, I am enabled to provide a system of intercommunicating reservoirs and ducts leading to the bearings and all arranged and organized in such a manner that t e entire system may be supplied -with lubrication through a single inlet aperture.\

In the drawings Figure 1 is a side elevation of a grin ing machine in which my invention is embodied. 'Fi 2 is a sectional view, drawn on line --w o Fig. 1.

Like parts are identified by the same reference characters in both views.

The casing structure illustratedl in the drawin is formed in two half members A and respectively, said members meeting on a plane transverse to the driving shaft C and driven shaft D. The plane of ,division also passes through the driving ear wheel E and driven pinion D', which is preferably formed by cutting grooves in the shaft D to form pinion teeth with which the teeth on the driving gear wheel E are adapted to mesh.

The specific manner in which the casing is divided is not essential to my invention, although it affords convenient -means for arranging the oil ducts of my improved lubricating system and also provides means for fully exposing the gearing. when .the casing members are separated. The casing member A is provided with a duct a which Specification of Letters Patent.

Patented May 9, 1916.

Application filed May 27, 1914. -Seri-al No. 841,196.

leads diagonally downwardly and laterally from the inlet F. The lower end of the duct a communicates'with a cylindrical bore G, which is adapted vto receive the driven shaft D, and at the inner end of whichl a pocket or cavity H is` formed, which may be filled with an absorbent`hiaterial,- such as felt. From the bottom 0.this cavity' H, a duc't a leads downwardly iii the wall of the casi roun ing the cylindrical' aperture or bone, which receives the drivin shaft C. This cavity I may also be filled wholly or partially with an absorbent material; 'f 1The=casing`. inember B is provided wit an angular, laterali 'and downwardly e .tending duct b, leading'from the inlet F tf an annular pocket J lsurrounding the driven shaft iD, `and :from fthe bottom of which pocket an auxiliary 'duct b' \leads downwa dlg to a pocket K, formed at the inner en Ithe bore in 'member B which receives the driving shaft C. These ockets J and K are also wholly or parta 1y illedwith absorbent material, and it `will be observed that the casing members, forming thewalls of the pockets H and K, constitute integral end caps eoverin'gyand protecting the ends of the shafts C and D, whereby the lubricant is prevented from escaping, except in so far as it may follow the shaft C to the driving crank L or follow the shaft Dto the grinding wheel M.

It will be observed that the ducts a and b form an apex immediately under the inlet F, whereby the nozzle of an oil can mav be manipulated in either direction to f oil either to the duct system of the casing meinber A or to the duct system of the casin member B. By using absorbent materia in the cavities or pockets H, I, J and K,

the lubricant is cavities and slow y feeds along the shafts to the respective bearings. 1

I claim;

to an annularapocket or cavity I sarartially retained in these 1. A gear casing having a ear receiving and from the upper reservoirs to the lower reservoirs.

2. A gear casing provided with a gear cavity and upper and lower shaft bearings in its walls, said casing having an oil inlet in its upper portion and a system of ducts leading downwardly therefrom in both side walls of the casing to each of the shaft bearings and enlarged at the bearings to form reservoirs for the lubricant adapted to retain absorbent material in Contact with the shafts, whereby all of the reservoirs form a gear receiving cavity, each of said members having upper and lower lubricant receiving cavities, and also having shaft receiving apertures connecting said cavities transversely with each other and with the gear receiving chamber, each of said casing members being also provided with a system of ducts leading from the upper inlet to the respective cavities in such member.

In testimony whereof I aHiX my signature in the presence of two witnesses.

CLARENCE J. LUTHER. Witnesses:

LEVERETT C. WHEELER, IRMA D. BREMER. 

